Finding a balance between buying the things you want and maintaining financial responsibility is pretty tough, but Grndctrl is a web app that seeks to simplify your current situation and provide you with the information you want to know. All you do is enter basic info about your earnings and expenses and you'll be provided with helpful statistics including how soon you can buy that new gadget you've been pining for.
Setting up Grndctrl is ridiculously simply. You just enter your income sources (with their respective tax rates), monthly expenses, how much you're saving, and a list of things you want to buy some day. When you're done, the Grndctrl dashboard will display your daily, monthly and yearly savings along with other handy statistics like your yearly post-tax income and how long you have to wait to afford that thing you want to buy. In my fantasy calculations (pictured above) I save about $US78,000 a year and can afford to buy a new bed on Sunday. (If only that were true.)
Grndctrl is not an incredibly comprehensive finance tracker, but that's kind of the point. It requires a very minimal amount of information and provides you with the statistics that are most important to your actual life. It is a great tool for those of us who are not looking to spend a ton of time tracking every little piece of our financial situation.